Files That Outlook Uses

Outlook uses files to store information it needs. Some of the files are stored on your drive, other data is stored as hidden messages in your mail folders, and some configuration data is stored in the Registry. This hour discusses the files Outlook creates on your hard drive.

Outlook creates the following files and stores them in one of two folders in your Windows user profile. Some of the files are specific to your Outlook profile. So, if you have two profiles, you have two files, each named for a profile. Others files are shared by all of the Outlook profiles used with your Windows logon, including your custom toolbars, Outcmd.dat and VbaProject.OTM.